顾洋,杨银辉,曹建春,李绍宏,白于良,雷婷婷

• 1:昆明理工大学材料科学与工程学院

摘要(Abstract)：

利用OM、SEM、XRD、TEM、冲击力学测试和动电位极化研究了3.6 mass%和8.0 mass%两种Mn含量下19 mass%Cr节Ni型双相不锈钢800℃时效析出相的形成、韧性、耐点蚀性能。结果表明:Mn含量较低时,σ相析出较慢,54 h后呈细小颗粒弥散于铁素体奥氏体相界;由于Mn参与了σ相的形成,Mn含量较高时,σ相析出速度快,54 h后呈层片状覆盖在铁素体上;Mn含量的增加使奥氏体相比例增加,时效初期有助于提高实验钢的冲击性能,但时效后期大量σ相的析出加速了冲击性能的下降;低Mn含量实验钢点蚀电位在时效初期保持350 m V左右,比高Mn含量的电位高出约200 m V,54 h后两者耐点蚀性能均降低。较高的Mn含量在时效初期有助于提高实验钢的再钝化性能,54 h后两者再钝化性能趋于一致。

关键词(KeyWords)： 双相不锈钢;时效组织;Mn含量;耐点蚀性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51261010,51461024)

作者(Author): 顾洋,杨银辉,曹建春,李绍宏,白于良,雷婷婷

DOI: 10.13289/j.issn.1009-6264.2016.08.016

参考文献(References)：

• [1]Iza-mendia A.Microstructural and mechanical behavior of a duplex stainless steel under hot working conditions[J].Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science,1998,29:2975-2985.
• [2]Hutchinson W H,Ushioda K,Ruunsj G.Anisotropy of tensile behavior in a duplex stainless steel sheet[J].Materials Science and Technology,1985,(1):728-731
• [3]谢月.25Cr 5Ni Mo N双相不锈钢析出相的研究[D].哈尔滨:哈尔滨工程大学,2011XIE Yue.Research on the precipitated phase of 25Cr-5Ni-Mo-N duplex stainless steel[D].Harbin:Harbin Engineering University,2011.
• [4]Josefsson B,Nilsson J-O,Wilson A.Phase transformations in duplex steels and relation between continuous cooling and isothermal heat treatment[C]∥Charles J,Bernhardsson S,editors.Duplex Stainless Steels'91,Beaune,Proceedings,vol.1.Les Ulis,France,Lesditions de Physique,1991:66-78.
• [5]繆乐德,张毅,王国栋,等.对750℃不同热处理时间2205双相不锈钢析出相的定性定量分析[J].冶金分析,2010,30(9):6-13.MIAO Le-de,ZHANG Yi,WANG Guo-dong,et al.Qualitative and quantitative analysis of precipitate phases for 750℃aged 2205 duplex stainless steel[J].Metallurgical Analysis,2010,30(9):6-13
• [6]Ihsan-ul-Haq T,Jung H P,Sang K H.Development of high Mn-N duplex stainless steel for automobile structural components[J].Corrosion Science,2008,50(2):404-410
• [7]Zhang W,Jiang L Z,Hu J C,et al.Study of mechanical and corrosion properties of a Fe-21.4Cr-6Mn-1.5N-0.24N-0.6Mo duplex stainless steel[J].Materials Science and Engineering A,2008,497(1/2):501-504.
• [8]Sieurin H,Sandstrom R,Westin E M.Fracture Toughness of the Lean Duplex Stainless Steel LDX 2101[J].Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science,2006,37(10):2975-2981.
• [9]Jun Wang,Uggowitzer P J,Magdowski R,et al.Nickel-free duplex stainless steels[J].Scripta Materialia,1999,40(1):123-139.
• [10]Li J,Xu Y L,Xiao X S,et al.A new resource-saving,high manganese and nitrogen super duplex stainless steel 25Cr-2Ni-3Mo-x Mn-N[J].Materials Science and Engineering A,2009,527(1/2):245-251.
• [11]马明,丁桦,唐正友,等.2205双相不锈钢中σ相的析出行为[J].东北大学学报(自然科学版),2014,35(4):504-507.MA Ming,DING Hua,TANG Zheng-you,et al.Precipitation behavior ofσphase in duplex stainless steel 2205[J].Journal of Northeastern University(Natural Science),2014,35(4):504-507.
• [12]范君伟,何晨冲,杜春风,等.590℃时效处理对2205双相不锈钢组织及硬度的影响[J].上海有色金属,2011,32(2):61-65.FAN Jun-wei,HE Chen-chong,DU Chun-feng,et al.Effects of aging treatment at 590℃on the phase structure and hardness of 2205 duplex stainless steel[J].Shanghai Nonferrous Metals,2011,32(2):61-65.
• [13]宋红梅,丁秀平,刘雄,等.高温时效2205双相不锈钢中的组织转变[J].材料热处理学报,2010,31(3):43-47.SONG Hong-mei,DING Xiu-ping,LIU Xiong,et al.Effect of high temperature aging onσ-phase precipitation in a 2205 duplex stainless steel[J]Transactions of Materials and Heat Treatment,2010,31(3):43-47.
• [14]Kim J S,Kwon H S.Effects of tungsten on corrosion and kinetics of sigma phase formation of 25%chromium duplex stainless steels[J]Corrosion Engineering Section,1999,55(5):512-521.
• [15]Wilms M E,Gadgil V J,Krougman J M,et al.The effect ofα-phase precipitation at 800℃on the mechanical properties of a high alloyed duplex stainless steel[J].Materials at High Temperatures,1991,9(3):160-166.
• [16]赵晖,徐玲.热处理对双相不锈钢的组织和腐蚀性能的影响[J].腐蚀科学与防护技术,2009,21(3):288-290.ZHAO Hui,XU Ling.Effect of heat treatment on microstructure and corrosion resistance of a duplex stainless steel 0Cr25Ni6Mo3Cu N[J].Corrosion Science and Protection Technology,2009,21(3):288-290.
• [17]Martins M,Forti L R N.Effect of Aging on impact properties of ASTM A890 grade 1C super duplex stainless steel[J].Materials Characterization,2008,59(2):162-166.
• [18]Calliari I,Zanesco M,Ramous E.Influence of isothermal aging on secondary phases precipitation and toughness of a duplex stainless steel SAF 2205[J].Journal of Materials Science,2006,41(22):7643-7649.
• [19]JIANG Da-wei,GE Chang-sheng,ZHAO Xiang-juan,et al.22Cr high-Mn-N low-Ni economical duplex stainless steels[J].Journal of Iron and Steel Research,International,2012,19(2):50-56.
• [20]Rondelli G,Vicentini B,Cigada A.Influence of nitrogen and manganese on localized corrosion behaviour of stainless steels in chloride environments[J].Materials and Corrosion-Werkstoffe Und Korrosion 1995,46(11):628-632.
• [21]Baba H,Kodama T,Katada Y.Role of nitrogen on the corrosion behavior of austenitic stainless steels[J].Corrosion Science,2002,44(2):393-407.
• [22]Belleze T,Roventi G,Fratesi R.Electrochemical characterization of three corrosion-resistant alloys after processing for heating-element sheathing[J].Electrochimica Acta,2004,(49):3005-3014.
• [23]Guion Pina,Igual Muoz V,García Antón A N.Influence of p H on the electrochemical behaviour of a duplex stainless steel in highly concentrated Li Br solutions[J].Corrosion Science,2011,53(2):575-581.

文章评论(Comment)：